104 + Mcqs in Elements Of Remote Sensing Page 1 McqOptions

1.	Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:%!
A.	Cloud evolution
B.	Vegetative cover
C.	Snow cover
D.	All of these
Answer» E.

Discussion

2.	Which one of the following attributes is not associated with digital maps%!
A.	Color
B.	Symbology
C.	Legends
D.	South arrow
Answer» E.

Discussion

3.	The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :%!
A.	8
B.	12
C.	16
D.	24
Answer» E.

Discussion

4.	Formation of snow occurs if the cloud temperature is%!
A.	Just above the freezing point
B.	At the freezing point
C.	Below the freezing point
D.	None of these
Answer» D. None of these

Discussion

5.	While propagating through homogeneous, isotropic media,%!
A.	Directions of both the fields are orthogonal
B.	Both the fields are at right angles to the direction of propagation
C.	Both (A) and (B)
D.	Neither (A) nor (B)
Answer» D. Neither (A) nor (B)

Discussion

6.	Which one the following is a correct statement?%!
A.	The vertical section of the soil extending into the parent material, is called profile
B.	The layers of the soil parallel to the earth surface are called horizons
C.	The transitional layer between two adjoining horizons is called boundary
D.	All of these
Answer» E.

Discussion

7.	Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct?%!
A.	1, 2, 3
B.	1, 3
C.	2, 3
D.	1, 2
Answer» B. 1, 3

Discussion

8.	DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within%!
A.	25 km
B.	50 km
C.	75 km
D.	100 km
Answer» E.

Discussion

9.	A reduction of nitrogen nutrient in plants:%!
A.	Affects leaf color
B.	Reduces pigment concentration
C.	Increase the visible reflectivity
D.	All of these
Answer» E.

Discussion

10.	The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:%!
A.	0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 ≈í¬∫m
B.	2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 ≈í¬∫m
C.	4.2 to 5.0, 7.0 to 15.0 ≈í¬∫m and 1 cm to 30 cm
D.	All of these
Answer» E.

Discussion

11.	Electromagnetic radiation:%!
A.	Produces a time varying magnetic field and vice versa
B.	Once generated, remains self-propagating
C.	Is capable to travel across space
D.	All of these
Answer» E.

Discussion

12.	Which one of the following geometric errors of satellite sensors is random?%!
A.	Scan skew
B.	Panoramic distortion
C.	Earth rotation
D.	Altitude variation
Answer» E.

Discussion

13.	Which one of the following parameters is considered to determine the reflectance of a vegetation canopy?%!
A.	Solar zenith angle
B.	Azimuth angle
C.	Look angle
D.	All of these
Answer» E.

Discussion

14.	The altitudinal distance of a geostationary satellite from the earth is about:%!
A.	26,000 km
B.	30,000 km
C.	36,000 km
D.	44,000 km
Answer» D. 44,000 km

Discussion

15.	The normal altitude of GPS satellite is about%!
A.	16,200 km
B.	20,200 km
C.	24,400 km
D.	36,100 km
Answer» C. 24,400 km

Discussion

16.	Which one of the following relationship between the wave length (≈í¬™), and frequency and the speed (C) of the electromagnetic wave is correct?%!
A.	C = v + ≈í¬™
B.	C = ≈í¬™/v
C.	C = v≈í¬™
D.	C = 1/≈í¬™v
Answer» D. C = 1/≈í¬™v

Discussion

17.	Leaf reflectance depends primarily on:%!
A.	The pigments
B.	Internal cell structure
C.	Equivalent water content
D.	All of these
Answer» E.

Discussion

18.	Pick up the correct definition from the following with response to GIS.%!
A.	Common boundary between two areas of a locality is known as adjacency
B.	The area features which are wholly contained within another area feature, is known so containment
C.	The geometric property which describes the linkage between line features is defined as connectivity
D.	All of these
Answer» E.

Discussion

19.	*$_The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:?
A.	0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 ≈í¬∫m
B.	2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 ≈í¬∫m
C.	4.2 to 5.0, 7.0 to 15.0 ≈í¬∫m and 1 cm to 30 cm
D.	All of these
Answer» E.

Discussion

20.	*$_Electromagnetic radiation:?
A.	Produces a time varying magnetic field and vice versa
B.	Once generated, remains self-propagating
C.	Is capable to travel across space
D.	All of these
Answer» E.

Discussion

21.	*$_The altitudinal distance of a geostationary satellite from the earth is about:?
A.	26,000 km
B.	30,000 km
C.	36,000 km
D.	44,000 km
Answer» D. 44,000 km

Discussion

22.	*$_The normal altitude of GPS satellite is about?
A.	16,200 km
B.	20,200 km
C.	24,400 km
D.	36,100 km
Answer» C. 24,400 km

Discussion

23.	*$_Which one of the following geometric errors of satellite sensors is random??
A.	Scan skew
B.	Panoramic distortion
C.	Earth rotation
D.	Altitude variation
Answer» E.

Discussion

24.	*$_Which one of the following parameters is considered to determine the reflectance of a vegetation canopy??
A.	Solar zenith angle
B.	Azimuth angle
C.	Look angle
D.	All of these
Answer» E.

Discussion

25.	*$_Which one of the following relationship between the wave length (≈í¬™), and frequency and the speed (C) of the electromagnetic wave is correct??
A.	C = v + ≈í¬™
B.	C = ≈í¬™/v
C.	C = v≈í¬™
D.	C = 1/≈í¬™v
Answer» D. C = 1/≈í¬™v

Discussion

26.	*$_Pick up the correct definition from the following with response to GIS.?
A.	Common boundary between two areas of a locality is known as adjacency
B.	The area features which are wholly contained within another area feature, is known so containment
C.	The geometric property which describes the linkage between line features is defined as connectivity
D.	All of these
Answer» E.

Discussion

27.	/_'A time varying electric field produces a magnetic field.' This phenomenon is called:?
A.	Hertz's law
B.	Ampere Maxwell's law
C.	Faraday's law
D.	Kirchoff‚Äö√Ñ√¥s law
Answer» C. Faraday's law

Discussion

28.	/_While propagating through homogeneous, isotropic media,?
A.	Directions of both the fields are orthogonal
B.	Both the fields are at right angles to the direction of propagation
C.	Both (A) and (B)
D.	Neither (A) nor (B)
Answer» D. Neither (A) nor (B)

Discussion

29.	/_Leaf reflectance depends primarily on:?
A.	The pigments
B.	Internal cell structure
C.	Equivalent water content
D.	All of these
Answer» E.

Discussion

30.	/_Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct??
A.	1, 2, 3
B.	1, 3
C.	2, 3
D.	1, 2
Answer» B. 1, 3

Discussion

31.	/_Which one the following is a correct statement??
A.	The vertical section of the soil extending into the parent material, is called profile
B.	The layers of the soil parallel to the earth surface are called horizons
C.	The transitional layer between two adjoining horizons is called boundary
D.	All of these
Answer» E.

Discussion

32.	/_A reduction of nitrogen nutrient in plants:?
A.	Affects leaf color
B.	Reduces pigment concentration
C.	Increase the visible reflectivity
D.	All of these
Answer» E.

Discussion

33.	/_DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within?
A.	25 km
B.	50 km
C.	75 km
D.	100 km
Answer» E.

Discussion

34.	/_The phase difference of the waves 1 and 2 at A in the given figure is:?
A.	≈ì√Ñ/4
B.	≈ì√Ñ/2
C.	≈ì√Ñ/1
D.	3≈ì√Ñ/2
Answer» C. ≈ì√Ñ/1

Discussion

35.	/_The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:?
A.	Visible (0.4 - 0.7 ≈í¬∫m) region
B.	Near-IR (0.7 - 1.3 ≈í¬∫m) region
C.	Short wave-IR (1.3 - 2.7 ≈í¬∫m) region
D.	None of these
Answer» D. None of these

Discussion

36.	/_Pick up the correct statement from the following?
A.	The ratio of the up flux and down flux just above the snow surface, is called albedo
B.	Spectral albedo of snow is calculated for the semi-infinite snow thickness
C.	Water equivalent height of snow is the height of water column obtained by melting snow
D.	All of these
Answer» E.

Discussion

37.	/_A passive sensor uses:?
A.	Sun as the source of energy
B.	Flash light as a source of energy
C.	Its own source of energy
D.	None of these
Answer» B. Flash light as a source of energy

Discussion

38.	/_The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:?
A.	Ozone hole
B.	Atmospheric window
C.	Ozone window
D.	Black hole
Answer» C. Ozone window

Discussion

39.	_ In case of reflection and refraction of electromagnetic radiation,$?
A.	Angle of incidence = angle of refraction
B.	Angle of incidence = angle of reflection
C.	Angle of refraction = sum of the angles of incidence and refraction
D.	All the above
Answer» C. Angle of refraction = sum of the angles of incidence and refraction

Discussion

40.	_ "An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:$?
A.	Fresnel reflection
B.	Fresnel refraction
C.	Snell's law
D.	None of these
Answer» B. Fresnel refraction

Discussion

41.	_ A perfectly black body:$?
A.	Is a diffuse emitter
B.	Absorbs all the radiations of every wave lengths
C.	Emits power of every wave length
D.	All the above
Answer» E.

Discussion

42.	_ If electric permittivity and magnetic permeability of the medium are respectively ‚Äö√Ñ√≤≈í¬µ‚Äö√Ñ√¥ and ‚Äö√Ñ√≤≈í¬∫‚Äö√Ñ√¥, then the velocity (Cm) of the electromagnetic wave in the medium is given by:$?
A.	Cm = 1/≈í¬µ≈í¬∫
B.	Cm = 1/‚Äö√ √∂8 ≈í¬∫
C.	Cm = 5/‚Äö√ √∂≈í¬µ≈í¬∫
D.	None of these
Answer» C. Cm = 5/‚Äö√ √∂≈í¬µ≈í¬∫

Discussion

43.	_ The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:$?
A.	Passive remote sensing
B.	Active remote sensing
C.	Neutral remote sensing
D.	None of these
Answer» C. Neutral remote sensing

Discussion

44.	_ Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).$?
A.	h > ≈í¬™/≈í√Æ cos ≈í‚àè
B.	h = ≈í¬™/8 cos ≈í‚àè
C.	h > ≈í¬™/8 cos ≈í‚àè
D.	h < ≈í¬™/8 cos ≈í‚àè
Answer» D. h < ≈í¬™/8 cos ≈í‚àè

Discussion

45.	_ Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its$?
A.	Six ground stations
B.	Five ground stations
C.	Four ground stations
D.	Three ground stations
Answer» C. Four ground stations

Discussion

46.	_ The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,$?
A.	Reduces the contrast of the image and also its sharpness
B.	Increases the contrast of the image but reduces the sharpness
C.	Increases both the contrast and sharpness
D.	Reduces the contrast but increases the sharpness
Answer» B. Increases the contrast of the image but reduces the sharpness

Discussion

47.	_ The phase difference of the waves 1 and 2 at A in the given figure is:$?
A.	≈ì√Ñ/4
B.	≈ì√Ñ/2
C.	≈ì√Ñ/1
D.	3≈ì√Ñ/2
Answer» C. ≈ì√Ñ/1

Discussion

48.	_ The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:$?
A.	Spectral variation
B.	Spatial variation
C.	Temporal variation
D.	None of these
Answer» C. Temporal variation

Discussion

49.	_ The various stages occuring in GPS system are described below: 1. Generation of an output to the user 2. Detection of the GPS signals 3. Processing the data in the built-in-computer 4. Decoding the GPS signal.The correct sequence of the stages is:$?
A.	1, 2, 3, 4
B.	2, 3, 4, 1
C.	2, 4, 3, 1
D.	3, 1, 2, 4
Answer» D. 3, 1, 2, 4

Discussion

50.	_ The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:$?
A.	Visible (0.4 - 0.7 ≈í¬∫m) region
B.	Near-IR (0.7 - 1.3 ≈í¬∫m) region
C.	Short wave-IR (1.3 - 2.7 ≈í¬∫m) region
D.	None of these
Answer» D. None of these

Discussion

Explore topic-wise MCQs in Civil Engineering.

Repetitive observations of the same area at equal interval of time are useful to monitor the dynamic phenomena:%!

Which one of the following attributes is not associated with digital maps%!

The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :%!

Formation of snow occurs if the cloud temperature is%!

While propagating through homogeneous, isotropic media,%!

Which one the following is a correct statement?%!

Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct?%!

DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within%!

A reduction of nitrogen nutrient in plants:%!

The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:%!

Electromagnetic radiation:%!

Which one of the following geometric errors of satellite sensors is random?%!

Which one of the following parameters is considered to determine the reflectance of a vegetation canopy?%!

The altitudinal distance of a geostationary satellite from the earth is about:%!

The normal altitude of GPS satellite is about%!

Which one of the following relationship between the wave length (≈í¬™), and frequency and the speed (C) of the electromagnetic wave is correct?%!

Leaf reflectance depends primarily on:%!

Pick up the correct definition from the following with response to GIS.%!

*$_The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:?

*$_Electromagnetic radiation:?

*$_The altitudinal distance of a geostationary satellite from the earth is about:?

*$_The normal altitude of GPS satellite is about?

*$_Which one of the following geometric errors of satellite sensors is random??

*$_Which one of the following parameters is considered to determine the reflectance of a vegetation canopy??

*$_Which one of the following relationship between the wave length (≈í¬™), and frequency and the speed (C) of the electromagnetic wave is correct??

*$_Pick up the correct definition from the following with response to GIS.?

*/*_'A time varying electric field produces a magnetic field.' This phenomenon is called:?

*/*_While propagating through homogeneous, isotropic media,?

*/*_Leaf reflectance depends primarily on:?

*/*_Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct??

*/*_Which one the following is a correct statement??

*/*_A reduction of nitrogen nutrient in plants:?

*/*_DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within?

*/*_The phase difference of the waves 1 and 2 at A in the given figure is:?

*/*_The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:?

*/*_Pick up the correct statement from the following?

*/*_A passive sensor uses:?

*/*_The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:?

_ In case of reflection and refraction of electromagnetic radiation,$?

_ "An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:$?

_ A perfectly black body:$?

_ If electric permittivity and magnetic permeability of the medium are respectively ‚Äö√Ñ√≤≈í¬µ‚Äö√Ñ√¥ and ‚Äö√Ñ√≤≈í¬∫‚Äö√Ñ√¥, then the velocity (Cm) of the electromagnetic wave in the medium is given by:$?

_ The interaction of the electromagnetic radiation produced with a specific wave length to illuminate a target on the terrain for studying its scattered radiance, is called:$?

_ Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).$?

_ Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its$?

_ The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,$?

_ The phase difference of the waves 1 and 2 at A in the given figure is:$?

_ The arrangement of terrain features which provides attributes: the shape, size and texture of objects, is called:$?

_ The various stages occuring in GPS system are described below: 1. Generation of an output to the user 2. Detection of the GPS signals 3. Processing the data in the built-in-computer 4. Decoding the GPS signal.The correct sequence of the stages is:$?

_ The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:$?

/_'A time varying electric field produces a magnetic field.' This phenomenon is called:?

/_While propagating through homogeneous, isotropic media,?

/_Leaf reflectance depends primarily on:?

/_Consider the following statements regarding the satellite imaging: 1. The satellite orbit is fixed in the inertial space 2. During successive across-track imaging, the earth rotates beneath the sensor 3. The satellite images a skewed areaWhich one of the following statements is/are correct??

/_Which one the following is a correct statement??

/_A reduction of nitrogen nutrient in plants:?

/_DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within?

/_The phase difference of the waves 1 and 2 at A in the given figure is:?

/_The reflection of solar energy is characterized by the water content in the leaf, in the reflective optical infrared:?

/_Pick up the correct statement from the following?

/_A passive sensor uses:?

/_The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:?